Constant temperature device for asphalt penetration test

The utility model discloses an asphalt penetration test thermostat, which relates to the field of asphalt detection, and comprises a penetrometer body and a heating water tank fixedly mounted at the top of the penetrometer body, a partition plate is movably mounted in the heating water tank, and a glass dish is movably mounted at the top of the partition plate. A temperature control assembly is fixedly installed at the right end of the top of the penetrometer body, and two heat preservation assemblies are movably installed at the left end and the right end of the top of the penetrometer body. Through the arrangement of the temperature control assembly, water in the heating water tank is heated through the temperature control assembly, flexible circuit breaking and flexible control over the current direction and the power are carried out, the water temperature is controlled so as to ensure that the water temperature is constant, and the temperature adjustment of the device is more flexible; the opening in the